/ Dictionary / Index W wafer-thin: Meaning and Definition of Find definitions for: wa•fer-thin Pronunciation: (wā'fur-thin'), [key] — adj. very thin: a wafer-thin slice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: wafer-thin (Thesaurus) waferboard waff Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language